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近几年来,杉木红蜘蛛危害杉木幼林的现象,在我们地区不少地方都有不同程度的发生,已成为杉木的主要虫害。1972年,在桃源县枫树公社黎家坡大队林场和部分社队林场,发现少数杉木红蜘蛛危害杉木幼林。今年几个公社,几十个社队林场,从几十亩蔓延到5千多亩。比较严重的陬郊、畲田,受害面积占杉林总面积的70％以上,严重影响杉木正常生长。因此,研究杉木红蜘蛛的特性,找出防治措施,已成为杉木速生丰产的重要课题。一、发生世代和形态特征杉木红蜘蛛属蜱螨目叶螨科。通过几
In recent years, Chinese fir spider mimic the phenomenon of young Chinese fir plantations, which have occurred in many places in our region and have become the major pests of Chinese fir. In 1972, in Taoyuan County Maple Tree commune Lijiapo brigade and part of the community forest farm, found that a small number of Chinese fir spider mite damage young forest. Several communes this year, dozens of community teams forest farms, spread from dozens of acres to more than 5 acres. The more serious suburb, Shetian, affected area accounted for more than 70% of the total area of Chinese fir, seriously affecting the normal growth of Chinese fir. Therefore, the study of the characteristics of Chinese spider mites, to identify prevention and control measures, has become an important issue of Chinese fir fast-growing and yielding. First, the occurrence of generations and morphological characteristics of the Chinese red spider mites Acarina Tetranychidae. Through a few